Universal joint.



No. 896,195. PATENT-ED AUG, 1'8, 190s.- P. H. 'BOGART.. UNIVERSAL-JOINT.

APPIJOATION FILED AUG. 12, 1907.v

2 SHEETS-SHEET 1.

No. 896,195. PATENTED AUG.'18, 1908 P. H. BOGART. 7 7 UNIVERSAL JOINT.

APPLICATION FILED AUG. 12, 1907.

. 2 SHEETSSHBBT 2. v

FRED H. BOGART, OF HARTFORD, CONNECTICUT,

T OFFICE.

ASSIGNOR TO HARTFORD AUTOMOBILE PARTS COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT UNIVERSAL JOINT.

Specification of Letters Patent.

Patented Aug. 18, 1908.

Application filed August 12, 1907. Serial No. 388,269.

To all whom it may concern:

Be it known that I, FRED H. BOGART, a citizen of the United States of America, residing at Hartford, in the county of Hartford and State of Connecticut, have invented new and useful Improvements in Universal Joints, of which the following is a specification. A

This invention relates to the construction of universal joints, the object thereof being to provide a construction which is simple and strong and easily machined and assembled, and it is in the nature'of an improvement on the joint for which Letters Patent of the United States were'issued to me.0n September 4, 1906 numbered 830,203.

The invention is clearly illustrated in the accompanying drawings, in which Figure 1 1s a perspective view of one element of the joint, one part of the inclosing casing therefor being shown in section, as is also the locking ring. Fig.2 is a perspective view of a circular platehaving seats in 0 site sides thereof for the forked end of the driving and driven elements of the joint, and

Fig. 3 is a view similar to Fig. 1 showing the other element of the fork, the other part of the casing being shown in section, these three views taken together showing the en" tire construction with their parts in separated relation. Fig. 4 is a plan view of the bearing plate shown in Fig. 2, and of one of the elements of the fork in position on the plate. Fig. 5 is a sectional view in the plane of line 55, Fig. 4 showing clearly the relation of the two elements of the joint to the bearingplate, also showing the inclosing cas ing in position on the joint.

Referring to these drawings, a, Fig. 1, is one element of the joint and it consists of the hub-part b providpd with the forked arms 0 springing from opposite sides thereof anaf extending downward beyond the end ofi'the hub, the extremity of each arm having the cylindrical part (1 thereon, which parts have a common axis. The opposite member, shown in Fig. 3, is in all respects like the member a, and for purposes of reference the parts thereof are indicated by the same letters with prime numerals. Either one of these elemonts u or a may he the driving element, those parts being secured res ectively to a d riving and a driven shaft by eys, or in any desired manner.

Tho cylindrical portions d and d of the two .of the elements a, (1

elements a and a of the joint are rotatably supported in the same plane with their forks at right angles one to the other, by means of an annular bearing-plate e, shown clearly in Fig. 2.v Preferably, this plate is forged, with the cylindrical bosses f which are to constitute the bearings for the forks, left solid, the centers of thesebosses on the plate lying in the central plane of the latter, this being clearly shown in Fig. 5,as well as Fig. 2, and on. either side of the late a circular web 9 is formed extending be ween each of the bearing bosses f whereby the latter are securely braced against strains applied thereto in the plane of rotation of the p ate e.

The cylindrical bearingbosses f are bored out to receive the cylindrical parts (I andd Each pair of oppositely located bearing bosses is cut through diametrically of the plate 6, as at h, Fig. 2, one pair on one side and one on the other side of the plate,thecutaway parts in the bear ing bosses being of sufficient width to allow each of the elements a, a to oscillate through the proper arc. Itwill' be observed that the plate 6 is annular,; and.,means are thereby provided whereby in assembling, each fork can be located astride of one of the bearing bosses f and then moved axially of the latter to bring each of the cylindrical parts (i or d to a proper seat in'their respective bearing bossesf. It will be noticed that the border of the plate e extends beyond the outer endof the hearing bosses f, and by referring to Fig. 5 it will be seen that the periphery of the plate thus constitutes a clamp against which the two halves 7c and k of the casing abut, each of the casing parts being provided with a flange m and m seate d on the plate 6, the

latter and the flanges m, m being bored to 90 receive locking screws (not shown), as is also the metal ring 0 which is L-shaped 1n cross section. This ring 0 serves a double purpose .of making a relatively tight joint for the flanged edges of the casing where'theyjoin the plate 6, and also serves. to back up the casing at the point p (Fig. 5) which, at this point, serves to prevent either of the elements a, a from having any movement axially in the bearing bosses f. Of course there is very little tendency to such cndwise movement of these elements a, a in their bearings, but whatever tendency there is, is overcome by fitting the two parts of thecasing closely to the outer ends of the parts (i, d. Where the that the joint 1 rein descri ed isbf simple and strong construction, easily machined,

and very quickly assembled, there being no fitting of any of the parts in assembling, and the torsional strain-,3 when the joint is .run-

- ning, is a plied directly to the bearings in the plate e w ch are integral with the plate itself, the ribs 9 on either side of the plate extend-' ing between the bearings, serving to strongly brace the bearings and stiffen the plate, permitting the latter to be made of relatively light weight. The joint is so constructed also that it can be readily inspected by simplyunfastening the two parts of-the casing and sliding them back upon their respective open, two forked members provided with shafts, without interfering with the adjustment of the parts of the joint in any Way.

Attention is called to the fat that there are no parts in the make-up of the joint that have to be secured together to hold the parts in their ropei' operative relation, and therefore nothing that in running can loosen up in a way to prevent its perfectly smooth action under all conditions.

What I .claim, is:

1. A universal joint com rising an annular bearing-plate havin iametrically op posed bearings thereon, t e ends of which are hubs, the axes of which extend through the i axis of said plate, each member having a swinging movement in two of said bearings on opposite sides of said plate, the planes of oscil ation of said members being at right angles one to the other, and a twoart cas ing to inclose the bearing-plate, an removably secured thereto.

2. A universal joint having in combination an annular bearing plate provided with cylindrically shaped radially disposed bearings in the plane thereof, members provided With'hubs and oppositely disposed arms terminating in cylindrical bearing elements for engaging the bearings in said bearing-plate, a two part casing provided with a flanged rim secured to the plate, and a clamping ring secured to the casing.

3. A universal joint having in combination an annular bearing plate rovided with cylindrically shaped radially isposed bearings in the plane thereof, members provided with hubs and oppositely disposed arms-terminating in cylindrical bearing elements for engaging the bearings in said bearing-plate, a two-partcasing provided with a flanged rim secured to the plate, and a clamping ring secured to the casing, said ring being rectangularin cross section and engaging the periphery of the annular bearing-plate and casing; V

4 FRED H. BOGART.

Witnesses:

K; I. CLEMoNs', WM. H. CHAPIN. 

